Injector.



PATENTED DBG. 6, 1904.

L. E.. HOGE.

INJEGTOR.

APPLIOATIUN FILED AUG. e, 1904.

N0 MODEL.

@ a added,

UNITED STATES Patented December 6, 1904.

PATENT OFFICE.

INdECTOR..

SPECIFICATION forming part of Letters Patent No. 776,840, dated December6, 1904:. Application filed August 8, 1904. Serial No. 219,952. (Nomodel.)

T0 all whom it 71mg/ con/cern..-

Be it known that LLovnnN E. HoGUn, a citizen of the United States,residing at Greenville, in the county of Mercer and State ofPennsylvania, have invented new and useful Improvements in Injectors, ofwhich the followingI is a specification.

This invention relates to injectors of the upright class; and primarilyit consists of two barrels or inclosures, one-barrel containingI threetubes consisting of an upper steam-in jecting tube, an intermediatelifting-tube, and a lower forcing-tube, the latter having' suitableopenings for hot and cold overflow, a diaphragm or other obstructivemedium being interposed between the two overflows, the other barrelcontaining two valves coperating with the overiiows with respect to ancxhaust opening' or connection.

The invention further consists in the details of construction andarrangement of the several parts, which will be more fully hereinafterset forth.

The primary object of the present invention is to provide an injectororganization wherein a positive operation ensues to overcomedisadvantages heretofore encountered in devices of this class andwhereby at least one-third more water may be introduced into a boilerunder the control of what may be termed a throttle-valve when it isnecessary to use the injector with high steam-pres sure; further, toprovide means for throwing water into a boiler with lower steam-pressurethan has heretofore been possible without in the least detracting fromthe sufficiency of supply of water and to effect a condensation of thesteam and concentration of thc full force at a proper point in thedelivery or forcing' tube to carry the water into the boiler and alsorelieve the pressure on the exhaustvalves to allow the latter to drop totheir seats and shut off the ingress of outside air into the working'barrel or inelosure; furthermore, to employ a structure whereby thevalves controlling1 the exhaust will be covered with water to form aseal during a certain operation of the injector to resist the entranceof outside air; further, to provide means in the suction-pipe 1n theform of a grading-cock to increase the flow of water into the boiler,especially when runningl with high steam, by permitting water to Howinto the injector below the suction-tube to a point adjacent the inletof the delivery-tube after condensation has taken place, and, further,to generally improve injectors and extend their range or scope ofefiiciency in consonance with surrounding conditions or exigencies.

The drawing illustrates a sectional view of an injector embodying' thefeatures of the invention, a portion of the same being shown in dottedlines to illustrate the locked position of a part of the valves.

The numeral 1 designates a casing for the parts of the injector, whichis shaped and proportioned to provide two barrels or inclosures 2 and 3,the former having a suction pipe or nozzle 4, with an exteriorscrew-threaded extremity 5 for attachment toa source of water supply,such as a pipe, a steam-injecting nipple or tubular couplingl 6, with anexteriorly screw-tlneaded end 7, and a boiler-attaching extremity or endS, provided with an annular inclosingI plate?) and a circumferentialscrewthreaded enlargement 10 for the reception of a pipe or enlargementwith any other means for attaching the injector to a boiler. The barrelor inclosure 3 has a screw-threaded exhaustcouplingcollar 11, and saidbarrel is of less longitudinal extent than the barrel 2. '.lhe nipple ortubular coupling 6 may be of any length and is separably connected tothe casing by means of a eoupling-ring or analogous device 12, having' ascrew-threaded flange 13 to coperate with a vertical extension 14 of thecasing, which will be more fully hereinafter sct forth. ln the barrel 2,disposed in longitudinal alinement, are a steam-tube 15,a liftingtuhe16, and a forcing-tube 17, the steam-tube having a circumferentialbearing-boss 18 on the extc rior of its upper extremity from whichprojects a fiange 19, disposed on the upper edge of the verticalextension 14, the bore or opening 2O extending through the steamtubegradually increasing in diameter toward the lower terminal of said tube.The bore 20 opens into the center of the lower portion of the nipple ortubular coupling 6, and thelatter has a base-flange 21, which bears onthe IOO flange 19, the coupling-ring when applied to the extension 14securing the anges 21 and 19 in firm engagement with each other. Thelower end of the steam-tube slightly projects into the upper extremityof the liftingtube, and such extremity of the latter is of materiallygreater diameter than the lower 'end of the steam-tube to elect thedesired operation with respect to the water entering the barrel 2. Thelifting-tube is secured by threads or other analogous means to anannular support 22, located within the barrel or inclosure 2, and tolimit the upward movement of the lifting-tube a circumferential stop-,

shoulder 23 is formed in said tube and bears against the under side ofthe support. The opening or bore 24 of the lifting-tube decreases indiameter toward the lower end of said tube, and the upper end of thistube around the lower end of the steam-tube is fully open and adjacentto the communicating opening between the Suction nozzle or pipe 4 andthe barrel 2. The forcing-tube 17 has an upper flared extremity7 25, andthe bore 26 therethrough gradually reduces toward the lower end of saidtube. The upper extremity of the tube is formed'with a circumferentialpartition projection 27, which is connected by screwthreads or otheranalogous means to an annular support 28 in the barrel orinclosure 2,and by this means a partition is provided in the valve between the upperand lower extremities of the forcing-tube, and likewise the support 22establishes a partition in the barrel with respect to the lifting-tube16.' The lower end of the forcing-tube is continuous with or has theclosing-plate 9 secured thereto, and when thelower end of the barrel orinclosure 2 is applied the said plate will be projected into thecoupling means for making the connection between the injector and theboiler. Between the lower end of the lifting-tube and the upper end ofthe forcing-tube a space is provided, preferably about one-half inch inextent, to facilitate the operation, which will be hereinafterexplained, and cooperating with four openings 29 in the upper end of theforcing-tube above the partition projection 27, these openings servingas cold-water overflow means and vents for steam until the water arrivesat a proper point within the injector. Below the partition projection 27the forcingtube has spaced series of holes or openings 30 and 31, whichprovide means for the overliowingof hot water, and also serves assteamvents until the water reaches a proper point.

The barrel or inclosure 3 contains two valves 32 and 33 and a cap 34,the valves 32 and 33, respectively, cooperating with partitionvalveseats 35 and 36, forming compartments 37 and 38, having openings 39and 40, communicating with the barrelor inclosure 2 at points adjacentto the hot and cold overflows or openings in the forcing-tube 17. Theupper valve 32 has a hollow stem 41, into which is movably inserted thesolid stem 42 of the lower valve 33 to permit both valves to be carriedup against the cap 34 to fully clear the compartments or chambers 37 and38 and establish unobstructed escape means for the hot and cold overowsin the barrel or inclosure 2. The opening through the upper partitionvalveseat 35 is of such diameter that the valve 33 will passtherethrough and insure a complete telescope operation of the two valves32 and 33 when said valves are open. OnY the upper valve 32 a collar 43is cast or otherwise secured to. contact with the Linder side of the cap34 when forced up against the latter by the steam-pressure within theinjector when said valves 32 and 33 are free to be influenced by suchpressure. This collar 43 when in engagement with the under side of thecap 34 forms a closing means for the opening 44 in the cap, throughwhich the stem 41 has movement, and thereby prevents the escape of steamat this point. The cap 34 has an upper boss or enlargement 45, andthereto is pivotally attached a stirrup 46, provided with a set-screw47, having a suitable thumb-engaging head 48,

the said screw working downwardly through the stirrup and adapted to bebrought into contact with the upper end of the valve-stem 41. Under`ordinary conditions or when the injector is used with stationary enginesthe stirrup 46 and the set-screw 47 will lie over the top or cap 34 ofthe barrel or inclosure 2, and the stem 41 and the valves coperatingtherewith will be free for upward movement. Then the injector is used onlocomotives, the stirrup46, acting in conjunction with the valvestem 41to hold the valves 32 and 33 closed, will serve the same purpose as afrost-cock. Then locomotives are on side tracks or the injector is notin use in cold freezing weather, the stirrup is raised to perpendicularposition and the set-screw 47 is adjusted to bring the same in 'contactwith the upper end of the stem 41 and forces the valve 32 closely downto its seat, thereby shutting off the natural outlet for steam andforcing it back through the suction pipe or nozzle 4 into the watertankor other water-supply source to warm the pi pes and water in the tank toprevent freezing.

rlhe inlet or suction nozzle or pipe 4 has a valve 49 mounted therein,which may be of any type suitable for the purpose, but preferabl y ofthe butterfly form, and is substituted for the usual lazy-cock, the stemof the Valve on one side being disposed in any preferred form ofstuffing-box and provided with a terminal lever-handle 50, thestuiiing-box operating when properly packed to keep the air fromentering the suction-pipe. The suctionpipe opposite the stufling-box onthe exterior is formed with a suitable receptive means, such as a bossor the terminal of the stem which incloses the latter and excludes theair on its side.

The injector as thus far described is com- IIO plete'for manyapplications and will have a positive operation with advantageous effectin the injection of water into a boiler, and the additions, which willbe presently set forth, serve only as valuable auxiliaries to render theinjector more effective in its operation. The first of these auxiliariesconsists of a grading cocl or valve 51, disposed in a suitable seat 52therefor between the inner lower por- `tion of the suction-pipe 4 andthe adjacent wall of the barrel or inclosure 2. The opening controlledby this grading-cock is from the suction-pipe into the space in thebarrel or inclosure 2 below the lower end of the lifting-tube 16, and bythe use of this valve extra water is furnished to the delivery orforcing tube 17 and will increase the flow of water into the boilerabout one-third from a comparative standpoint, especially when runningwith high steam-pressure. rlhe tube 16 is not a lifting-tube until afterthe injector is in operation, as it will be observed that whilesteam-pressure is in the working barrel 2 it will be forced back intothe suction-pipe. After the steam is condensed in the lifting andforcing tubes the grading-cock is opened to cause water to be drawn intothe forcing or delivery tube and add very materially to the supply ofwater to the boiler, as well as insuring condensation under highsteam-pressure. In other words, the grading-cock is never used untilafter condensation has taken place.

The second auxiliary consists in au attachment for controlling theentrance of steam into the nipple 6 and comprises a globe-casing 53, avertically-shiftable stem 54, having its lower end adapted to serve as avalve, and a lever 55, attached to the upper end of the stem and alsoconnected to a Fulcrum-lever 56, movabl y secured to the side of anattaching'` collar 57 for the connection of a steam-pipe. The lowerportion of the globe-casing' 53 has a collar 58 to engage the nipple 6,the collar 57 being practically in a plane at right angles to the collar58. The stem 54 moves through a gland or stuffing-box 59 on the uppercen tral portion of the globe-casing 53, and projecting downwardly fromthe latter into the interior thereof is a stop-sleeve 60, with whichprojections 61, which may be of any preferred form, are adapted tocontact to limit the up ward movement of the stem 54. The lower end ofthe stem 54 normally closes the upper open terminal of the steamtube,said' end of the stem being of such diameter as to closely lit in theupper reduced portion of the bore in said tube.

As before indicated, the lower end of the barrel or inclosure 2,containing the forcingtube 17, is attached to the water-space in aboiler, the suction pipe or nozzle 4 being connected to a tank orotherwater-supply and the exhaust collar or member 11 secured as usualto a suitable exhaust tube or pipe. Under l ordinary conditions thevalve 49 will be partially opened and the valves 32 and 33 free to act,except as hereinbelore noted, when the in* jector is used on alocomotive and freezing is liable to ensue. Steam is admitted to the nipple 6, and by raising the stem 54 it passes downwardly through thesteam-tube 15 and into and through the lifting-tube, thereby creating asuction which will draw the water into the injector through thesuction-pipe 4. The steam continues downwardly into the forcing-tube 17and passes out through the openings heretofore explained and thenceenters the barrel or inclosure 3, which may be properly termed theexhaust-barrel, the pressure of the steam in the lower end of the valveraising the valves 32 and 33 and establishing a clearance or passage tothe exhaust collar or member 11. As soon as water arrives in theinjector it condenses the steam and concentrates its full force on thesmall openings in the forcing or delivery tube and carries the waterinto the boiler and also relieves the pressure on the exhaust-valves 32and 33, allowing them to drop to their seats to preventthc entrance ofoutside air into the barrel or inclosure 2, the valves 32 and 33 beingdisposed below the exhaust-outlet, especially the lower valve 33,induces the establishment of a water seal which will prevent theentrance of outside air into the injector, with obviousadvantages. Theoperation of the injector will thus continue regularly until thevalve-stem 54 is lowered to shut ollA theingress of steam, it beingunderstood that this valve-stein may be normally operated at any timeeither to open or close the steam-tube 15. The globe-casing 53 and stem54, together with the parts coperating with the latter, may be properlytermed a controller for the injection of steam into the improved device.liurthermore, the valve 49 may be adjusted, as required, to control theopening between the barrel or inclosure 2 and the suction tube or nozzle4, and at a proper time the grading-cock 51 may be opened to admit waterfrom the suction tube or nozzle 4 to a point between the lifting andforcing tubes, as hereinbefore referred to. As before indicated,however, the operation of the injector in the main is not dependent uponthe use of the butterfly-valve 49, the grading-cock 51, or theglobe-easing 53 and stern 54, these parts being' auxiliary means toadapt the injector to various contingencies. flt will a'lso beunderstood that changes in the proportions, dimensions, and' minordetails" may be resorted to without departing from the spirit of theinvention and also that suitable packings may be introduced at pointswhere found necessary to avoid leakage.

Having thus fully described the invention, what is claimed as new is- 1.ln an injector of the class set forth, the combination of communicatingbarrels -or inclosures, one having a suction-pipe attached y valve at aplane below the said suction-pipe and also provided with longitudinalalined, steam, lifting and forcing tubes, and the other valvecommunicating with the one having the tubes and provided with a valvedexhaustoutlet.

3. In an injector of the class set forth, the combination of two barrelsor inclosures, the one having a suction-pipe with a valve therein and agrading-valve below7 the former valve and also provided with steam,lifting and forcing tubes in alinement, the steam-tube projecting intothe lifting-tube and the latter and the forcing-tube spaced apart fromeach other` a valved-steam-injecting pipe secured to said barrel orinclosure having the steam, lifting Aand forcing tubes therein, anddirectly communicating' with one extremity of the steamtube, theremaining barrel or inclosure having an exhaust-outlet and valves operating therein.

4. In an injector of the class set forth', the combination of twobarrels or inclosures, the one having a double-valved suction-pipe andprovided with steam, lifting, and forcing tubes in longitudinalalinement, and the other having communication with the former andprovided with an exhaust-outlet and two telescopically-associated valveswhich are automatically operative under steam-pressure.

5. In an injector of the class set forth, the combination of two barrelsor inclosures, one having a suction-pipe with an adjustable valvetherein and a grading-valve at a plane below the adjustable valve andalso provided with steam, lifting, and forcing tubes, and the otherhaving an exhaust-outlet in communication with the former and providedwith dual valves automatically operative by steam-pressure to giveaccess to the exhaust-outlet, the one valve having guiding means movableinto similar means of the other.

6. In an injector, of the class set forth, the combination of twobarrels or inclosures in communication with each other, the one having avalved suction-pipe, and also provided with steam,lifting and forcingtubes, and a steam-injecting tube communicating directly with oneextremity of the steam-tube, the `contiguous ends of the lifting andforcing tubes being separated from each other, and the forcing-tubehaving separated openings for hot and cold overflows, the remainingbarrel or inclosure being' provided with an exhaust and dual telescopicvalves, one of the latter having means for locking it against movement.

7. In an injector of the class set forth, the combination of two barrelsor inclosures in communication with each other, the one barrel having asuction-pipe with two valves therein cooperating with the said barrel,the firstnamed barrel having steam, lifting, and forcing tubes therein,the steam-tube projecting into the lifting-tube and the latter and theforcing-tube having ends spaced apart from each other, the forcing-tubealso having separated openings therein, the remaining barrel orinclosnre having an exhaust-outlet and telescopic valves operatingtherein.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

LOVREN E. HOGUE. Vitnesses:

SAMUEL C. LIVINGSTON, A. D. GILLnsPIE.

